STEAM BOILER TESTS — ROBB. 15 



then be summed up and the result of the test ascertained and 



recorded in the following manner : 



Test of boiler at day of 18 



Kind of B(Mler 



Dimensions 



No. tubes 



Size of fire-box 



Grate surface sq ft. 



Heating surface u 



Height of chimney 



Size II 



Duration of test hours. 



Kind of fuel 



Boiler pressure (by gauge) lbs. 



Temperature of feed-water entering boiler deg. Far. 



II II II pump or injector n 



II escaping gases m 



Total fuel consumed lbs. 



Percentage of moisture in fuel per cent. 



Equivalent dry fuel lbs. 



Total weight of ash .1 



Equivalent combustible m 



Total water evaporated n 



Water evaporated per hour n 



11 ,1 per pound of dry fuel .... lbs. 



I, M II 11 II from and at 212° n 



II II II II combustible m n n n 



Horse power developed 



The above particulars are determined in the following manner: 



The pressure of steam and temperatures of feed-water, and gases 



are taken from the average readings of the same. 



The total quantities of fuel, ash and water, are taken from the 



net summing of log, great care being taken that no error is made. 



The percentage of moisture in fuel is determined by drying a 



sample of the fuel for 24 hours and getting the difference between 



the wet and dry weights, which difference is multiplied by 100 



and divided by the weight of sample before drying. 



